Can either be used in hand held or vice mounted mode. See video here.
The world's safest, fastest bolt cleaner. The Thread wizard is an award winning bolt cleaning tool designed. Housed in a highly durable handle which is specially shaped to be handheld or clamped in a vise, a wire wheel of the highest quality protrudes into size specific holes surrounding the wheel. Made in the U.S.A. Sizes include 9/16" 7/16" 5/16" #12 #10 1/4" 3/8" and 1/2".